Aggregation-Induced Emission-Active Hydrazide-Based Probe: Selective Sensing of Al³⁺, HF₂ ^-, and Nitro Explosives.

ABSTRACT: (E)-N'-((2-Hydroxynaphthalen-1-yl)methylene)picolinohydrazide (H-PNAP) shows aggregation-induced emission (AIE) strictly in a 90% water/MeOH (v/v) mixture at 540 nm, and the solid-state emission is blue-shifted to 509 nm upon excitation at 400 nm. The AIE activity of H-PNAP is selectively quenched by 2,4,6-trinitrophenol (TNP) and 2,4-dinitrophenol (DNP) out of different nitroaromatic compounds with a limit of detection (LOD) of 7.79 × 10^-7 and 9.08 × 10^-7 M, respectively. The probe is nonemissive in aqueous medium (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid, HEPES buffer, pH 7.2); however, it shows a strong emission to Al³⁺ (λ_em, 490 nm) in the presence of 17 other biological metal ions, and the LOD is 2.09 nM which is far

SUBMITTER: Dey S 

PROVIDER: S-EPMC6648475 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature